D.C. Mun. Regs. tit. 25-D, § 1100
1100.1 Poisonous or toxic materials shall be stored and transported so they can not contaminate equipment, devices, fixtures, linens, furnishings, garments, or other supplies by:
(a) Separating the poisonous or toxic materials by spacing or partitioning; and
(b) Storing poisonous or toxic materials to prevent contamination of equipment, devices, fixtures, linens, furnishings, garments, or other supplies.
Source: Final Rulemaking published at 56 DCR 7975 (October 9, 2009).